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Title: Attrition Resistant Iron-Based Fischer-Tropsch Catalysts.

Abstract

The Fischer-Tropsch (F-T) reaction provides a way of converting coal-derived synthesis gas (CO and H{sub 2}) to liquid fuels. Since the reaction is highly exothermic, one of the major problems in control of the reaction is heat removal. Recent work has shown that the use of slurry bubble column reactors (SBCRs) can largely solve this problem. Iron-based (Fe) catalysts are preferred catalysts for F-T when using low CO/H{sub 2} ratio synthesis gases derived from modern coal gasifiers. This is because in addition to reasonable F-T activity, the F-T catalysts also possess high water gas shift (WGS) activity. However, a serious problem with the use of Fe catalysts in a SBCR is their tendency to undergo attrition. This can cause fouling/plugging of downstream filters and equipment, making the separation of catalyst from the oil/wax product very difficult if not impossible, and results in a steady loss of catalyst from the reactor. The objectives of this research are to develop a better understanding of the parameters affecting attrition resistance of Fe F-T catalysts suitable for use in SBCRs and to incorporate this understanding into the design of novel Fe catalysts having superior attrition resistance. Catalyst preparations will be based on the usemore » of spray drying and will be scalable using commercially available equipment. The research will employ among other measurements, attrition testing and F-T synthesis, including long duration slurry reactor runs in order to ascertain the degree of success of the various preparations. The goal is to develop an Fe catalyst which can be used in a SBCR having only an internal filter for separation of the catalyst from the liquid product, without sacrificing F-T activity and selectivity.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Hampton Univ., VA (United States). Dept. of Chemical Engineering
Sponsoring Org.:
USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
OSTI Identifier:
611786
Report Number(s):
DOE/PC/96217-T1
ON: DE98051714
DOE Contract Number:  
FG22-96PC96217
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 22 Sep 1997
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; FISCHER-TROPSCH SYNTHESIS; IRON; CATALYTIC EFFECTS; PROGRESS REPORT; CATALYSTS; SLURRIES; COAL; ATOMIZATION

Citation Formats

Jothimurugesan, K, Goodwin, J S, Spivey, J J, and Gangwal, S K. Attrition Resistant Iron-Based Fischer-Tropsch Catalysts.. United States: N. p., 1997. Web. doi:10.2172/611786.
Jothimurugesan, K, Goodwin, J S, Spivey, J J, & Gangwal, S K. Attrition Resistant Iron-Based Fischer-Tropsch Catalysts.. United States. doi:10.2172/611786.
Jothimurugesan, K, Goodwin, J S, Spivey, J J, and Gangwal, S K. Mon . "Attrition Resistant Iron-Based Fischer-Tropsch Catalysts.". United States. doi:10.2172/611786. https://www.osti.gov/servlets/purl/611786.
@article{osti_611786,
title = {Attrition Resistant Iron-Based Fischer-Tropsch Catalysts.},
author = {Jothimurugesan, K and Goodwin, J S and Spivey, J J and Gangwal, S K},
abstractNote = {The Fischer-Tropsch (F-T) reaction provides a way of converting coal-derived synthesis gas (CO and H{sub 2}) to liquid fuels. Since the reaction is highly exothermic, one of the major problems in control of the reaction is heat removal. Recent work has shown that the use of slurry bubble column reactors (SBCRs) can largely solve this problem. Iron-based (Fe) catalysts are preferred catalysts for F-T when using low CO/H{sub 2} ratio synthesis gases derived from modern coal gasifiers. This is because in addition to reasonable F-T activity, the F-T catalysts also possess high water gas shift (WGS) activity. However, a serious problem with the use of Fe catalysts in a SBCR is their tendency to undergo attrition. This can cause fouling/plugging of downstream filters and equipment, making the separation of catalyst from the oil/wax product very difficult if not impossible, and results in a steady loss of catalyst from the reactor. The objectives of this research are to develop a better understanding of the parameters affecting attrition resistance of Fe F-T catalysts suitable for use in SBCRs and to incorporate this understanding into the design of novel Fe catalysts having superior attrition resistance. Catalyst preparations will be based on the use of spray drying and will be scalable using commercially available equipment. The research will employ among other measurements, attrition testing and F-T synthesis, including long duration slurry reactor runs in order to ascertain the degree of success of the various preparations. The goal is to develop an Fe catalyst which can be used in a SBCR having only an internal filter for separation of the catalyst from the liquid product, without sacrificing F-T activity and selectivity.},
doi = {10.2172/611786},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {9}
}